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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/panels/panel_browser_titlebar_gtk.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/gtk/custom_button.h"
#include "chrome/browser/ui/gtk/gtk_theme_service.h"
#include "chrome/browser/ui/gtk/gtk_util.h"
#include "chrome/browser/ui/panels/panel.h"
#include "chrome/browser/ui/panels/panel_browser_window_gtk.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/gtk/gtk_compat.h"
#include "ui/gfx/skia_utils_gtk.h"
namespace {
// Spacing between buttons of panel's titlebar.
const int kPanelButtonSpacing = 7;
// Spacing around outside of panel's titlebar buttons.
const int kPanelButtonOuterPadding = 7;
// Markup for painting title as bold.
const char* const kTitleMarkupPrefix = "<span font_weight='bold'>";
const char* const kTitleMarkupSuffix = "</span>";
// Colors used to draw title in attention mode.
const SkColor kAttentionTitleTextDefaultColor = SK_ColorWHITE;
// Alpha value used in drawing inactive titlebar under non-default theme.
const U8CPU kInactiveAlphaBlending = 0x80;
SkColor BlendSkColorWithAlpha(SkColor fg_color, SkColor bg_color, U8CPU alpha) {
if (alpha == 255)
return fg_color;
double fg_ratio = alpha / 255.0;
double bg_ratio = 1.0 - fg_ratio;
return SkColorSetRGB(
(SkColorGetR(fg_color) * fg_ratio + SkColorGetR(bg_color) * bg_ratio),
(SkColorGetG(fg_color) * fg_ratio + SkColorGetG(bg_color) * bg_ratio),
(SkColorGetB(fg_color) * fg_ratio + SkColorGetB(bg_color) * bg_ratio));
}
} // namespace
PanelBrowserTitlebarGtk::PanelBrowserTitlebarGtk(
PanelBrowserWindowGtk* browser_window, GtkWindow* window)
: BrowserTitlebar(browser_window, window),
browser_window_(browser_window) {
}
PanelBrowserTitlebarGtk::~PanelBrowserTitlebarGtk() {
}
SkColor PanelBrowserTitlebarGtk::GetTextColor() const {
PanelBrowserWindowGtk::PaintState paint_state =
browser_window_->GetPaintState();
if (paint_state == PanelBrowserWindowGtk::PAINT_FOR_ATTENTION)
return kAttentionTitleTextDefaultColor;
return paint_state == PanelBrowserWindowGtk::PAINT_AS_ACTIVE ?
theme_service()->GetColor(ThemeService::COLOR_TAB_TEXT) :
BlendSkColorWithAlpha(
theme_service()->GetColor(ThemeService::COLOR_BACKGROUND_TAB_TEXT),
theme_service()->GetColor(ThemeService::COLOR_TOOLBAR),
kInactiveAlphaBlending);
}
void PanelBrowserTitlebarGtk::UpdateButtonBackground(CustomDrawButton* button) {
// Don't need to update background since we're using transparent background.
}
void PanelBrowserTitlebarGtk::UpdateTitleAndIcon() {
DCHECK(app_mode_title());
std::string title = UTF16ToUTF8(browser_window_->panel()->GetWindowTitle());
// Add the markup to show the title as bold.
gchar* escaped_title = g_markup_escape_text(title.c_str(), -1);
gchar* title_with_markup = g_strconcat(kTitleMarkupPrefix,
escaped_title,
kTitleMarkupSuffix,
NULL);
gtk_label_set_markup(GTK_LABEL(app_mode_title()), title_with_markup);
g_free(escaped_title);
g_free(title_with_markup);
}
bool PanelBrowserTitlebarGtk::BuildButton(const std::string& button_token,
bool left_side) {
// Panel only shows close and minimize/restore buttons.
if (button_token != "close" && button_token != "minimize")
return false;
if (!BrowserTitlebar::BuildButton(button_token, left_side))
return false;
if (button_token == "minimize") {
// Create unminimze button, used to expand the minimized panel.
unminimize_button_.reset(CreateTitlebarButton("unminimize", left_side));
// We control visibility of minimize and unminimize buttons.
gtk_widget_set_no_show_all(minimize_button()->widget(), TRUE);
gtk_widget_set_no_show_all(unminimize_button_->widget(), TRUE);
}
return true;
}
void PanelBrowserTitlebarGtk::GetButtonResources(const std::string& button_name,
int* normal_image_id,
int* pressed_image_id,
int* hover_image_id,
int* tooltip_id) const {
if (button_name == "close") {
*normal_image_id = IDR_PANEL_CLOSE;
*pressed_image_id = 0;
*hover_image_id = IDR_PANEL_CLOSE_H;
*tooltip_id = IDS_PANEL_CLOSE_TOOLTIP;
} else if (button_name == "minimize") {
*normal_image_id = IDR_PANEL_MINIMIZE;
*pressed_image_id = 0;
*hover_image_id = IDR_PANEL_MINIMIZE_H;
*tooltip_id = IDS_PANEL_MINIMIZE_TOOLTIP;
} else if (button_name == "unminimize") {
*normal_image_id = IDR_PANEL_RESTORE;
*pressed_image_id = 0;
*hover_image_id = IDR_PANEL_RESTORE_H;
*tooltip_id = IDS_PANEL_RESTORE_TOOLTIP;
}
}
int PanelBrowserTitlebarGtk::GetButtonOuterPadding() const {
return kPanelButtonOuterPadding;
}
int PanelBrowserTitlebarGtk::GetButtonSpacing() const {
return kPanelButtonSpacing;
}
void PanelBrowserTitlebarGtk::UpdateMinimizeRestoreButtonVisibility() {
if (!unminimize_button_.get() || !minimize_button())
return;
Panel* panel = browser_window_->panel();
gtk_widget_set_visible(minimize_button()->widget(), panel->CanMinimize());
gtk_widget_set_visible(unminimize_button_->widget(), panel->CanRestore());
}
void PanelBrowserTitlebarGtk::HandleButtonClick(GtkWidget* button) {
if (close_button() && close_button()->widget() == button) {
browser_window_->panel()->Close();
return;
}
GdkEvent* event = gtk_get_current_event();
DCHECK(event && event->type == GDK_BUTTON_RELEASE);
if (minimize_button() && minimize_button()->widget() == button) {
browser_window_->panel()->OnMinimizeButtonClicked(
(event->button.state & GDK_CONTROL_MASK) ?
panel::APPLY_TO_ALL : panel::NO_MODIFIER);
} else if (unminimize_button_.get() &&
unminimize_button_->widget() == button) {
browser_window_->panel()->OnRestoreButtonClicked(
(event->button.state & GDK_CONTROL_MASK) ?
panel::APPLY_TO_ALL : panel::NO_MODIFIER);
}
gdk_event_free(event);
}
void PanelBrowserTitlebarGtk::ShowFaviconMenu(GdkEventButton* event) {
// Favicon menu is not supported in panels.
}
void PanelBrowserTitlebarGtk::UpdateTextColor() {
DCHECK(app_mode_title());
GdkColor text_color = gfx::SkColorToGdkColor(GetTextColor());
gtk_util::SetLabelColor(app_mode_title(), &text_color);
}
void PanelBrowserTitlebarGtk::SendEnterNotifyToCloseButtonIfUnderMouse() {
if (!close_button())
return;
gint x;
gint y;
GtkAllocation widget_allocation = close_button()->WidgetAllocation();
gtk_widget_get_pointer(GTK_WIDGET(close_button()->widget()), &x, &y);
gfx::Rect button_rect(0, 0, widget_allocation.width,
widget_allocation.height);
if (!button_rect.Contains(x, y)) {
// Mouse is not over the close button.
return;
}
// Create and emit an enter-notify-event on close button.
GValue return_value;
return_value.g_type = G_TYPE_BOOLEAN;
g_value_set_boolean(&return_value, false);
GdkEvent* event = gdk_event_new(GDK_ENTER_NOTIFY);
event->crossing.window =
gtk_button_get_event_window(GTK_BUTTON(close_button()->widget()));
event->crossing.send_event = FALSE;
event->crossing.subwindow = gtk_widget_get_window(close_button()->widget());
event->crossing.time = gtk_util::XTimeNow();
event->crossing.x = x;
event->crossing.y = y;
event->crossing.x_root = widget_allocation.x;
event->crossing.y_root = widget_allocation.y;
event->crossing.mode = GDK_CROSSING_NORMAL;
event->crossing.detail = GDK_NOTIFY_ANCESTOR;
event->crossing.focus = true;
event->crossing.state = 0;
g_signal_emit_by_name(GTK_OBJECT(close_button()->widget()),
"enter-notify-event", event,
&return_value);
}
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